WESCOR 7720 - Page 24

DOC-00322-ENA.doc Page 24 of 29 ! Wescor, Inc
Preventive Maintenance Procedure Reagent Lot Record Corrective Action Log
Day
Reagent
A
Reagent
B
Reagent
C
Reagent
D
Reagent
E
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
DAILY: At end of each shift or if instrument will be idle for more than four
hours
1. Run a CLEAN cycle. Leave instrument in CLEAN TO REPRIME mode.
2. Use a spray bottle filled with methanol or ethanol and spray the front of
each nozzle and clean each nozzle orifice with nozzle brush.
3. Spray the stainer bowl and exterior case using methanol or ethanol.
Wipe clean with a paper towel.
4. If using Potassium Permanganate, fill a #13 rubber sleeve stopper with
SS-029C Nozzle Cleaning Solution and slip it over the B line nozzle
when the instrument is not in use
5. Initial completion of daily procedure on preventive maintenance (PM)
chart.
6. When you are ready to use the instrument again, press CLEAN to
reprime reagent lines (remove rubber sleeve stopper from B nozzle if
present). In addition, you may want to run a SPRAY PATTERN test to
verify nozzle performance prior to staining. Should any pattern appear
abnormal repeat step 2 to clean nozzle orifice.
WEEKLY:
1. Perform SPRAY PATTERN and SPRAY VOLUME tests. Record volume
collected from each nozzle on PM chart.
2. If volume trends lower or spray pattern is abnormal, disassemble and
clean affected nozzle(s). Do not mix or interchange nozzles or nozzle
parts. Always return nozzles to same location in stainer. Repeat SPRAY
PATTERN and SPRAY VOLUME tests on cleaned nozzle(s).
3. Wipe down nozzles, carousel tray, and carousel lid using methanol or
ethanol spray bottle or prepared SS-029C Nozzle Cleaning Solution with
a paper towel.
4. Slowly pour 200-300 mL of water into instrument drain to prevent build
up of paper fibers, precipitates, etc. Verify drain is flowing properly and
not allowing fluid to back up in bowl or flow out of air vent on case back.
5. Initial completion of weekly PM.
MONTHLY:
1. Disassemble and clean all nozzles. Do not mix or interchange nozzles
or nozzle parts.
2. COMPLETE STEP 2 ONLY IF USING SS-061BP or
SS-161BP (POTASSIUM PERMANGANATE) REAGENT. Remove Pick-
up Tube from Reagent B bottle. Then:
A. Flush 500 mL DI Water through the line.
B. Flush 100 mL prepared SS-029C through the line. Block flow at
nozzle holder with a gloved finger for a few seconds during flushing
process. Stop flushing just before 100 mL is gone and allow to
soak in line overnight.
C. Flush prepared SS-029C out of line with 500 mL of DI Water.
D. Reinstall Reagent B and flush 100 mL through the line to remove
DI water.
3. Reinstall nozzles. Always return nozzles to the same location in stainer.
4. Perform SPRAY PATTERN and SPRAY VOLUME tests. Record results
from end of month SPRAY VOLUME test on preventive maintenance
chart. NOTE: As you enter a new month the Volume After Monthly
Cleaning number becomes Previous Months Ending Volume number.
5. Disinfect reusable bottles with a 1/10 dilution of household bleach. Rinse
thoroughly with deionized water.
6. Initial completion of monthly PM.
7. Supervisor checks and initials.
ANNUALLY:
1. Check internal and exterior tubing and fittings for cracks, leaks, or any
type of deterioration. Replace as needed.
Instructions for Reagent Lot Record
Each time you replace a reagent bottle, record lot number from the new bottle in
the box that corresponds to the reagent changed and current months numeric
date.
Corrective Action Log Instructions
The Corrective Action Log is optional. Document
each problem occurrence with (1) the date, (2) a
brief description of the nature of problem, and (3)
any corrective action taken to resolve or correct
problem.